Exercise device



FIG. 1 is a side perspective view of the exercise device;

FIG. 2 is a top view of FIG. 1;

FIG. 3 is a bottom view of FIG. 1;

FIG. 4 is a side view of FIG. 1;

FIG. 5 is a back view of FIG. 1; and,

FIG. 6 is a front view of FIG. 1. 

CLAIM I claim the ornamental design for the exercise device, as shown and described. 